SpaceX latest commercial resupply services mission successfully docked at the International Space Station on Saturday.
周六，SpaceX最新的商业补给任务成功对接国际空间站。
Commercial Resupply Services
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AP 听力 2021年6月合集
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Commercial Resupply Services
Commercial Resupply Services (CRS) are a series of contracts awarded by NASA from 2008–2016 for delivery of cargo and supplies to the International Space Station (ISS) on commercially operated spacecraft. The first CRS contracts were signed in 2008 and awarded $1.6 billion to SpaceX for 12 cargo transport missions and $1.9 billion to Orbital Sciences for 8 missions, covering deliveries to 2016. In 2015, NASA extended the Phase 1 contracts by ordering an additional three resupply flights from SpaceX and one from Orbital Sciences. The second phase of contracts, solicited and proposed in 2014, known as CRS2 will cover transport flights from 2019 until 2024.
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